Improvement in car-couplings



'H. BLACKMU RE.

Car-Goupiing.

Patented June 15, I875.

No.ll64,4l9.

Wham/5.1:.

THE GRAPHIC CO.PHOTO -L|TH.39 k4] PARK PLAGLMY.

UNITED PATENT QFFICE.

HENRY BLACKMORE, OF PITTSBURG, PENNSYLVANIA.

IMPROVEMENT IN CAR-COUPLINGS.

Specification forming part of Letters Patent No. 164,419, dated June 15,1875; application filed March 25, 1875.

To all whom it may concern:

Be it known that I, HENRY BLAGKMORE, 'of Pittsburg, in the county ofAllegheny and State of Pennsylvania, have invented a new and usefulImprovement in Oar-Gouplin g and I do hereby declare that the followingis a full and exact description thereof, reference being had to theaccompanying drawings, and to the letters of reference marked thereon.

My invention relates to an improvement in car-coupling, and is animprovement upon the ear-coupling for which Letters Patent were grantedme March 22, 1864, numbered 42,041.

The nature of my present improvement consists in providing the bufferswith pin-holders, used in connection with the ordinary couplingpiu, andweighted triggers for holding them in an elevated position, and inconnection therewith a coupling-link having an opening in one end of it,the diameter of which is a little more than the diameter of thecouplingpin, so that when the link is placed in one of the bufier-heads,with a coupling-pin passing through said opening in the link, it will beheld in the proper position for entering the buffer to which it is to becoupled, and for displacing the weighted trigger for the purpose ofallowing the elevated coupling-pin to drop through the larger opening ofthe couplingpin, and thereby automatically couple the cars.

To enable others skilled in the art to make and use my invention, I willproceed to describe its construction and operation.

In the accompanying drawings, which form part of my specification,Figure l is a top view of my improved buffers coupled together. Fig. 2is a side elevation of the same. Fig. 3 is a vertical and longitudinalsection of two bufferheads, representing the position of the severalparts prior to being coupled together. Fig. 4 represents a top view orplan of the couplingpm.

A and B represent the buffers, each of which is provided with apin-holder, O, in which is pivoted at e a weighted trigger, D, theweight f of which should be about equal to the weight.

of the coupling-pin 9, so that when the point of the pin is resting uponthe projection h of the weighted trigger D it will be held in anelevated position in the pin-holder O, as represented in Fig. 3. Thecoupling-pin g is of ordinary construction, having a head, i, withsuitable shoulders to prevent it from dropping through the openings inthe buffers. The coupling-link j is of ordinary construction, exceptingthe small opening It, made in one end of it, the diameter of whichopening should correspond to the diameter of the coupling-pin Thebuffers hereinbefore described are attached to and arranged withrelation to the end of the cars in the ordinary manner.

As the construction of my improved coupling for cars will be readilyunderstood from the foregoing description and by reference to theaccompanying drawings, I will therefore proceed to describe itsoperation, which is as follows:

The coupling-link j is placed in the bufferhead A, with the coupling-ping passing through the opening 70 of the link j. In the buffer B the pin9 is placed in the pin-holder O, with the point of the pin resting onthe projection h of the trigger D, as represented in Fig. 3.

The several parts of the buffers being thus arranged for couplingtogether, the buffer A approaching the buffer B, the link j will enterthe flaring-mouthed opening of the buffer B, and the end of the link,striking against the pendant lof the weighted trigger D, will throw itback into the cavity m, forcing from under the point of the pin g theprojection h, and thereby allow the pin to pass down through the openingof the link, thereby automatically coupling the cars together, wherebythe necessity of the operator placing himself between the cars for thepurpose of coupling them is avoided, and the danger attendant upon theordinary manner of coupling is obviated.

Having thus described my improvement, what I claim as of my inventionis-- The combination of buffer A, provided with pin-holder O, withpivoted trigger D, having weight f, projection h, and pendant Z, withthe link j and pin g, all substantially as and for the purpose setforth.

H. BLAOKMORE. Witnesses:

A. O. JOHNSTON, JNO. D. PATTEN.

